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    <div class="post-body" itemprop="articleBody"><p>这里使用 sealos 快速搭建起 k8s 单机平台和多节点</p>
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<h1 id="安装-sealos"><a href="#安装-sealos" class="headerlink" title="安装 sealos"></a>安装 sealos</h1><p>ubuntu、debian：</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">echo &quot;deb [trusted=yes] https://apt.fury.io/labring/ /&quot; | sudo tee /etc/apt/sources.list.d/labring.list</span><br><span class="line">sudo apt update</span><br><span class="line">sudo apt install sealos</span><br></pre></td></tr></table></figure>

<p>centos、redhat:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line">sudo cat &gt; /etc/yum.repos.d/labring.repo &lt;&lt; EOF</span><br><span class="line">[fury]</span><br><span class="line">name=labring Yum Repo</span><br><span class="line">baseurl=https://yum.fury.io/labring/</span><br><span class="line">enabled=1</span><br><span class="line">gpgcheck=0</span><br><span class="line">EOF</span><br><span class="line">sudo yum clean all</span><br><span class="line">sudo yum install sealos</span><br></pre></td></tr></table></figure>

<h1 id="启动-k8s"><a href="#启动-k8s" class="headerlink" title="启动 k8s"></a>启动 k8s</h1><p>单机启动</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">sealos run labring/kubernetes:v1.25.0 labring/calico:v3.24.1 labring/helm:v3.8.2 --single</span><br><span class="line">或者</span><br><span class="line">sealos run labring/kubernetes:v1.25.0 labring/flannel:v0.19.0 labring/helm:v3.8.2 --single</span><br></pre></td></tr></table></figure>

<p>calico 比较大，下载、启动都比较慢，flannel 相对快很多</p>
<p>如果启动失败可以尝试：</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sealos reset --force</span><br></pre></td></tr></table></figure>

<p>再上面的 sealos run</p>
<h1 id="加个控制面板"><a href="#加个控制面板" class="headerlink" title="加个控制面板"></a>加个控制面板</h1><p>创建一个脚本</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span 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class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br><span class="line">137</span><br><span class="line">138</span><br><span class="line">139</span><br><span class="line">140</span><br><span class="line">141</span><br><span class="line">142</span><br><span class="line">143</span><br><span class="line">144</span><br><span class="line">145</span><br><span class="line">146</span><br><span class="line">147</span><br><span class="line">148</span><br><span class="line">149</span><br></pre></td><td class="code"><pre><span class="line">#!/bin/bash</span><br><span class="line"></span><br><span class="line">ipaddr=$(ip addr | awk &#x27;/^[0-9]+: / &#123;&#125;; /inet.*global/ &#123;print gensub(/(.*)\/(.*)/, &quot;\\1&quot;, &quot;g&quot;, $2)&#125;&#x27; | awk &#x27;NR==1&#123;print&#125;&#x27;)</span><br><span class="line"></span><br><span class="line">echo &quot;current ip address is $&#123;ipaddr&#125;&quot;</span><br><span class="line"></span><br><span class="line">echo &quot;create file /root/kuboard-sa.yaml&quot;</span><br><span class="line"></span><br><span class="line">echo</span><br><span class="line"></span><br><span class="line">cat &gt; /root/kuboard-sa.yaml &lt;&lt; EOF</span><br><span class="line">---</span><br><span class="line">kind: Namespace</span><br><span class="line">apiVersion: v1</span><br><span class="line">metadata:</span><br><span class="line">  name: kuboard</span><br><span class="line"></span><br><span class="line">---</span><br><span class="line">kind: ServiceAccount</span><br><span class="line">apiVersion: v1</span><br><span class="line">metadata:</span><br><span class="line">  name: kuboard-admin</span><br><span class="line">  namespace: kuboard</span><br><span class="line"></span><br><span class="line">---</span><br><span class="line">kind: ClusterRoleBinding</span><br><span class="line">apiVersion: rbac.authorization.k8s.io/v1</span><br><span class="line">metadata:</span><br><span class="line">  name: kuboard-admin-crb</span><br><span class="line">roleRef:</span><br><span class="line">  apiGroup: rbac.authorization.k8s.io</span><br><span class="line">  kind: ClusterRole</span><br><span class="line">  name: cluster-admin</span><br><span class="line">subjects:</span><br><span class="line">  - kind: ServiceAccount</span><br><span class="line">    name: kuboard-admin</span><br><span class="line">    namespace: kuboard</span><br><span class="line"></span><br><span class="line">---</span><br><span class="line">kind: ServiceAccount</span><br><span class="line">apiVersion: v1</span><br><span class="line">metadata:</span><br><span class="line">  name: kuboard-viewer</span><br><span class="line">  namespace: kuboard</span><br><span class="line"></span><br><span class="line">---</span><br><span class="line">kind: ClusterRoleBinding</span><br><span class="line">apiVersion: rbac.authorization.k8s.io/v1</span><br><span class="line">metadata:</span><br><span class="line">  name: kuboard-viewer-crb</span><br><span class="line">roleRef:</span><br><span class="line">  apiGroup: rbac.authorization.k8s.io</span><br><span class="line">  kind: ClusterRole</span><br><span class="line">  name: view</span><br><span class="line">subjects:</span><br><span class="line">  - kind: ServiceAccount</span><br><span class="line">    name: kuboard-viewer</span><br><span class="line">    namespace: kuboard</span><br><span class="line"></span><br><span class="line">EOF</span><br><span class="line"></span><br><span class="line">echo &quot;kubectl apply -f /root/kuboard-sa.yaml&quot;</span><br><span class="line"></span><br><span class="line">kubectl apply -f /root/kuboard-sa.yaml</span><br><span class="line"></span><br><span class="line">echo</span><br><span class="line">echo &quot;create file /etc/kubernetes/manifests/kuboard.yaml&quot;</span><br><span class="line">echo</span><br><span class="line"></span><br><span class="line">cat &gt; /etc/kubernetes/manifests/kuboard.yaml &lt;&lt; EOF</span><br><span class="line">---</span><br><span class="line">apiVersion: v1</span><br><span class="line">kind: Pod</span><br><span class="line">metadata:</span><br><span class="line">  annotations: &#123;&#125;</span><br><span class="line">  labels:</span><br><span class="line">    k8s.kuboard.cn/name: kuboard-v3</span><br><span class="line">  name: kuboard-v3</span><br><span class="line">  namespace: kuboard</span><br><span class="line">spec:</span><br><span class="line">  containers:</span><br><span class="line">    - env:</span><br><span class="line">        - name: KUBOARD_ENDPOINT</span><br><span class="line">          value: &quot;http://$&#123;ipaddr&#125;:32001&quot;</span><br><span class="line">        - name: KUBOARD_AGENT_SERVER_TCP_PORT</span><br><span class="line">          value: &quot;10081&quot;</span><br><span class="line">      image: &#x27;eipwork/kuboard:v3&#x27;</span><br><span class="line">      imagePullPolicy: IfNotPresent</span><br><span class="line">      livenessProbe:</span><br><span class="line">        failureThreshold: 3</span><br><span class="line">        httpGet:</span><br><span class="line">          path: /kuboard-resources/version.json</span><br><span class="line">          port: 80</span><br><span class="line">          scheme: HTTP</span><br><span class="line">        initialDelaySeconds: 30</span><br><span class="line">        periodSeconds: 10</span><br><span class="line">        successThreshold: 1</span><br><span class="line">        timeoutSeconds: 1</span><br><span class="line">      name: kuboard</span><br><span class="line">      ports:</span><br><span class="line">        - containerPort: 80</span><br><span class="line">          hostPort: 32001</span><br><span class="line">          name: web</span><br><span class="line">          protocol: TCP</span><br><span class="line">        - containerPort: 10081</span><br><span class="line">          name: peer</span><br><span class="line">          protocol: TCP</span><br><span class="line">          hostPort: 10081</span><br><span class="line">        - containerPort: 10081</span><br><span class="line">          name: peer-u</span><br><span class="line">          protocol: UDP</span><br><span class="line">          hostPort: 10081</span><br><span class="line">      readinessProbe:</span><br><span class="line">        failureThreshold: 3</span><br><span class="line">        httpGet:</span><br><span class="line">          path: /kuboard-resources/version.json</span><br><span class="line">          port: 80</span><br><span class="line">          scheme: HTTP</span><br><span class="line">        initialDelaySeconds: 30</span><br><span class="line">        periodSeconds: 10</span><br><span class="line">        successThreshold: 1</span><br><span class="line">        timeoutSeconds: 1</span><br><span class="line">      volumeMounts:</span><br><span class="line">        - mountPath: /data</span><br><span class="line">          name: data</span><br><span class="line">        - mountPath: /init-etcd-scripts/import-cluster-once.yaml</span><br><span class="line">          name: import-cluster-yaml</span><br><span class="line">  volumes:</span><br><span class="line">    - hostPath:</span><br><span class="line">        path: &quot;/usr/share/kuboard&quot;</span><br><span class="line">      name: data</span><br><span class="line">    - hostPath:</span><br><span class="line">        path: &quot;/usr/share/kuboard/import-cluster-once.yaml&quot;</span><br><span class="line">      name: import-cluster-yaml</span><br><span class="line">  dnsPolicy: ClusterFirst</span><br><span class="line">  restartPolicy: Always</span><br><span class="line">  tolerations:</span><br><span class="line">    - key: node-role.kubernetes.io/master</span><br><span class="line">      operator: Exists</span><br><span class="line">EOF</span><br><span class="line"></span><br><span class="line">echo &quot;restart kubelet&quot;</span><br><span class="line"></span><br><span class="line">systemctl restart kubelet</span><br><span class="line"></span><br><span class="line">host_name=$(hostname)</span><br><span class="line"></span><br><span class="line">echo</span><br><span class="line">echo &quot;kubectl get pods -A 检查状态待 kuboard-v3-$&#123;host_name&#125; 的容器组变为 Running 状态后，则安装成功，可以通过 http://$&#123;ipaddr&#125;:32001 访问 kuboard 界面&quot;</span><br></pre></td></tr></table></figure>

<p>查看 pods 状态</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">kubectl get pods -A</span><br></pre></td></tr></table></figure>

<p>将上述文件保存为 kuboard.sh 后运行，上方的端口为 32001，如有其他端口需求可以更改为其他只需要改<br>hostPort 和 http:&#x2F;&#x2F;${ipaddr}:32001 即可</p>
<p>卸载：</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">kubectl delete -f /root/kuboard-sa.yaml</span><br></pre></td></tr></table></figure>

<h2 id="配置-kuboard"><a href="#配置-kuboard" class="headerlink" title="配置 kuboard"></a>配置 kuboard</h2><p>登录 kuboard 添加集群，选择 .kubeconfig 的方式添加</p>
<p>复制~&#x2F;.kube&#x2F;config 路径下的配置</p>
<p>修改 APIServer 地址，通常是与 docker 同一个网络环境。我这边是 master 节点 IP 为：192.168.6.27，那么 kubeconfig 找到：<code>server: https://apiserver.cluster.local:6443</code> 改为： <code>server: https://192.168.206.131:6443</code>，下面的 APIServer 地址也一样<code>https://192.168.206.131:6443</code></p>
<p>导入完成后，点击右上角的 使用 ServiceAccount kuboard-admin</p>
<p>这样就能可视化对 k8s 进行管理</p>
<h2 id="允许-master-节点进行调度"><a href="#允许-master-节点进行调度" class="headerlink" title="允许 master 节点进行调度"></a>允许 master 节点进行调度</h2><p>如果是单机部署的话，默认节点不允许执行调度，输入以下指令解除限制</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">kubectl taint nodes --all node-role.kubernetes.io/control-plane-</span><br></pre></td></tr></table></figure>

<h1 id="多节点安装"><a href="#多节点安装" class="headerlink" title="多节点安装"></a>多节点安装</h1><p>既然是多节点，那最少需要两台机器，在安装之前，需要保证每个服务器名是不重复的，比如一台服务器叫 master01，一台叫 node01，改名指令如下：</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">hostnamectl set-hostname master01</span><br><span class="line">reboot</span><br></pre></td></tr></table></figure>

<p>需要重启才能生效</p>
<p>然后是部署配置文件</p>
<figure class="highlight sh"><figcaption><span>Clusterfile</span></figcaption><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br></pre></td><td class="code"><pre><span class="line">apiVersion: apps.sealos.io/v1beta1</span><br><span class="line">kind: Cluster</span><br><span class="line">metadata:</span><br><span class="line">  creationTimestamp: null</span><br><span class="line">  name: default</span><br><span class="line">spec:</span><br><span class="line">  hosts:</span><br><span class="line">  - ips:</span><br><span class="line">    - 192.168.206.100:22</span><br><span class="line">    roles:</span><br><span class="line">    - master</span><br><span class="line">    - amd64</span><br><span class="line">  - ips:</span><br><span class="line">    - 192.168.206.102:22</span><br><span class="line">    roles:</span><br><span class="line">    - node</span><br><span class="line">    - amd64</span><br><span class="line">  image:</span><br><span class="line">  - labring/kubernetes:v1.25.0</span><br><span class="line">  - labring/helm:v3.8.2</span><br><span class="line">  - labring/calico:v3.24.1</span><br><span class="line">  ssh:</span><br><span class="line">    passwd: <span class="string">&quot;123&quot;</span></span><br><span class="line">    pk: /root/.ssh/id_rsa</span><br><span class="line">    port: 22</span><br><span class="line">status: &#123;&#125;</span><br><span class="line">---</span><br><span class="line">apiVersion: kubeadm.k8s.io/v1beta2</span><br><span class="line">kind: ClusterConfiguration</span><br><span class="line">networking:</span><br><span class="line">  podSubnet: 10.160.0.0/12</span><br></pre></td></tr></table></figure>

<p>新建文件 Clusterfile 放在当前目录，执行下面命令开始安装</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sealos apply -f Clusterfile</span><br></pre></td></tr></table></figure>

<p>不出意外的话，过一会就能装好了。</p>
<h1 id="添加删除节点"><a href="#添加删除节点" class="headerlink" title="添加删除节点"></a>添加删除节点</h1><p>添加删除node节点</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">sealos add --nodes xxx.xxx.xxx.xxx</span><br><span class="line">sealos delete --nodes xxx.xxx.xxx.xxx</span><br></pre></td></tr></table></figure>
<p>如果是master节点，上面的nodes换成masters。<br>有s是因为可以同时删除多个节点，比如</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sealos add --nodes xxx.xxx.xxx.xxx,yyy.yyy.yyy.yyy</span><br></pre></td></tr></table></figure>
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